package day1204_1;
//
public class T1   extends   Thread{

    public void run() {
        for(int i=1;i<=2100000000; i++){ System.out.println(i);}
    }

    public static void main(String[] args) {
        T1  caiLun=new T1();//创建对象
        caiLun.start();//对象.start()
    }

}
